Writing tool capable of rotationally discharging core

Abstract

A writing tool capable of discharging a refill in a rotating mode comprises a pen holder, the refill arranged in the pen holder, an elastic reset piece arranged on the refill and a control head arranged at the tail end of the pen holder, and further comprises a transmission piece arranged between the refill and the control head, and an oil storage groove used for containing lubricating oil is formed in the end, close to the control head, of the transmission piece. The control head extends into the oil storage tank to be connected with the transmission part, the end, away from the oil storage tank, of the transmission part abuts against the refill, when the control head is rotated in the forward direction, the control head drives the transmission part to press downwards so that the refill can stretch out, and when the control head is rotated in the reverse direction, the transmission part is lifted up under the action of the elastic reset part so that the refill can retract. According to the writing tool capable of rotationally discharging the refill, lubricating oil is not prone to leaking, and therefore the refill is not prone to being polluted.

Description

Technical Field

[0001] The utility model relates to the technical field of office stationery, and particularly relates to a writing tool with a rotatable core. Background Art

[0002] The Chinese utility model patent with the authorization announcement number CN201552858U discloses a writing tool, the structure of which is as Figure 1 shown, including a pen barrel 1a, a guide sleeve 2a, a push cap 3a, and a refill 4a. A push wheel 5a and a rotating wheel 6a are arranged inside the guide sleeve 2a; two O-rings 7a and 8a are respectively installed on the outer surface of the guide sleeve 2a at positions corresponding to the push wheel 5a and the rotating wheel 6a. The two O-rings 7a and 8a are in tight fit with the inner wall of the push cap 3a, and lubricating oil is installed in the gap between the two O-rings 7a and 8a. When operating the push cap 3a to expose or retract the core, the writing tool has lubricating oil installed between the two O-rings 7a and 8a, which can reduce the resistance and make the movement smoother, and has a certain sound insulation effect.

[0003] However, the existing writing tools still have the following technical problems: the lubricating structure is arranged between the push cap 3a and the guide sleeve 2a, and since the writing tool is a push-type structure and the push cap 3a is frequently pressed during use, it is very easy to cause the leakage of lubricating oil and contaminate the refill 4a. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a rotatable-core writing tool in which the lubricating oil is not easily leaked and thus is not easily contaminated with the refill.

[0005] The technical solution of the utility model is: a rotatable-core writing tool, including a pen barrel, a refill arranged inside the pen barrel, an elastic resetting member arranged on the refill, and a control head arranged at the tail end of the pen barrel. It also includes a transmission member arranged between the refill and the control head. An oil storage groove for installing lubricating oil is arranged inside one end of the transmission member close to the control head. The control head extends into the oil storage groove and is connected to the transmission member. One end of the transmission member far from the oil storage groove abuts against the refill. When the control head is rotated forward, the control head drives the transmission member to press down so that the refill extends out. When the control head is rotated backward, the transmission member is lifted under the action of the elastic resetting member so that the refill retracts.

[0006] After adopting the above structure, the utility model has the following advantages:

[0007] In the writing tool with a rotatable core of the present utility model, a lubricating structure with a silent function and the refill are separately arranged at both ends of the transmission member, and the lubricating structure is arranged inside the corresponding end of the transmission member. Thus, the lubricating structure and the refill can be well isolated by the transmission member, not only is the lubricating oil not easy to leak, so it is not easy to contaminate the refill, the product is cleaner and tidier to use, but also the loss of lubricating oil will not occur after multiple refill replacements, and the rotation texture is consistent.

[0008] Preferably, the control head is rotatably connected to the pen barrel. A spiral slide rail is arranged in the oil storage groove. A slider is arranged at the part of the control head extending into the oil storage groove. When the control head is rotated forward, the slider spirally ascends relative to the slide rail, and when the control head is rotated backward, the slider spirally descends relative to the slide rail. This setting realizes the telescoping of the refill by rotating the control head. The telescoping structure of the slider plus the slide rail is not only very simple in structure, but also the slider and the slide rail will not collide during relative movement, with less noise. In addition, the lubricating structure is arranged on the telescoping structure of the slider and the slide rail, which can further reduce the noise generated by the telescoping structure. Therefore, the overall silent effect is better.

[0009] Preferably, first limiting steps for positioning the core-out position and second limiting steps for positioning the core-in position are respectively arranged at both ends of the slide rail. This setting can ensure reliable switching of the refill between the core-out position and the core-in position.

[0010] Preferably, a first limiting depression is further arranged on the slide rail and close to the first limiting step, and a second limiting depression is further arranged on the slide rail and close to the second limiting step. This setting further ensures reliable switching of the refill between the core-out position and the core-in position.

[0011] Preferably, it further includes a rotating member that rotates synchronously with the control head. One end of the rotating member is snap-connected to the control head, and the other end is provided with a triggering part extending into the oil storage groove. The slider is arranged on the triggering part. The control head and the transmission member are connected by the rotating member, and the rotating member is detachably connected to both the control head and the transmission member, which is convenient for modular processing and installation.

[0012] Preferably, a clamping groove is formed on the outer side wall of the end of the rotating member connected to the control head, and a clamping block is arranged in the control head. The rotating member is snap-connected to the control head through the clamping block and the clamping groove. This snap connection structure is simple and convenient for installation.

[0013] Preferably, a limiting post hole into which the triggering part can be inserted is further arranged in the oil storage groove. The slide rail is formed on the top surface of the limiting post hole, and the slider protrudes on the outer side wall of the triggering part. This setting can not only use the limiting post hole to position the triggering part, making the connection between the triggering part and the oil storage groove more reliable, but also realize the structural reuse of the limiting post hole, and use its top surface to form the slide rail, so that the overall structure is more simple and compact.

[0014] Preferably, the top surface on one side of the limiting post hole is higher than that on the other side, so as to form a first limiting step for positioning the core-out position and a second limiting step for positioning the core-retracting position at the junction of the two sides, and the slide rail is arranged on the top surface of the lower side of the limiting post hole. This setting is easy to form the first limiting step and the second limiting step, further simplifying the structure.

[0015] Preferably, it further includes a connecting piece, one end of the connecting piece is fixed inside the tail end of the pen barrel, and the other end is rotatably connected inside the control head. This setting not only facilitates connecting the pen barrel and the control head by using the connecting piece, but also the connecting piece is hidden inside the pen barrel and the control head, making the structure more concise.

[0016] Preferably, the transmission piece extends into the connecting piece, and an axial guiding structure is further provided between the transmission piece and the connecting piece, which is used to convert the helical movement between the transmission piece and the control head into the axial movement between the transmission piece and the connecting piece. This setting can ensure the reliable telescopic movement of the pen core in the axial direction. Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of an existing writing tool;

[0018] Figure 2 It is a schematic structural diagram of the writing tool with rotary core-out of the present invention;

[0019] Figure 3 It is an axial sectional view of the writing tool with rotary core-out of the present invention;

[0020] Figure 4 It is an exploded schematic diagram of the writing tool with rotary core-out of the present invention;

[0021] Figure 5 It is a schematic structural diagram of the writing tool with rotary core-out of the present invention after hiding the pen barrel and the control head;

[0022] Figure 6 It is a schematic structural diagram of the transmission piece of the present invention;

[0023] Figure 7 It is a schematic structural diagram of the rotating piece of the present invention;

[0024] In the prior art figure: 1a - pen barrel, 2a - guide sleeve, 3a - press cap, 4a - pen core, 5a - press wheel, 6a - runner, 7a, 8a - O-ring;

[0025] In the figures of the present utility model: 1 - pen barrel, 2 - refill, 3 - control head, 4 - transmission member, 5 - oil storage groove, 6 - trigger portion, 7 - elastic reset member, 8 - slide rail, 9 - slider, 10 - first limiting step, 11 - second limiting step, 12 - first limiting depression, 13 - second limiting depression, 14 - rotating member, 15 - card slot, 16 - clamping block, 17 - limiting post hole, 18 - connecting member, 19 - first annular protrusion, 20 - guiding block, 21 - guide rail, 22 - second annular protrusion. Detailed implementation manner

[0026] The following will further illustrate the present utility model in conjunction with the attached drawings and embodiments.

[0027] Embodiment:

[0028] As Figure 2-7 shown, a writing tool with a rotatable refill includes a pen barrel 1, a refill 2 disposed within the pen barrel 1, an elastic reset member 7 disposed on the refill 2, and a control head 3 disposed at the tail end of the pen barrel 1. It further includes a transmission member 4 disposed between the refill 2 and the control head 3. An oil storage groove 5 for containing lubricating oil is disposed inside one end of the transmission member 4 close to the control head 3. The control head 3 extends into the oil storage groove 5 and is connected to the transmission member 4. The end of the transmission member 4 away from the oil storage groove 5 abuts against the refill 2. When the control head 3 is rotated forward, the control head 3 drives the transmission member 4 to press down, causing the refill 2 to extend. When the control head 3 is rotated backward, the transmission member 4 is lifted under the action of the elastic reset member 7, causing the refill 2 to retract. The elastic reset member 7 is, for example, a spring.

[0029] In the writing tool with a rotatable refill of the present utility model, the lubricating structure with a silent function and the refill 2 are separately disposed at both ends of the transmission member 4, and the lubricating structure is disposed inside the corresponding end of the transmission member 4. Thus, the lubricating structure and the refill 2 can be well isolated by the transmission member 4. Not only is the lubricating oil not easily leaked, so it is not easy to contaminate the refill 2, and the product is cleaner and tidier during use, but also the loss of lubricating oil will not occur after multiple refills are replaced, and the rotation texture is consistent.

[0030] The control head 3 is rotatably connected to the pen barrel 1. A spiral slide rail 8 is disposed in the oil storage groove 5. A slider 9 is disposed at the portion where the control head 3 extends into the oil storage groove 5. When the control head 3 is rotated forward, the slider 9 spirally ascends relative to the slide rail 8. When the control head 3 is rotated backward, the slider 9 spirally descends relative to the slide rail 8. This setting realizes the telescoping of the refill 2 by rotating the control head 3. The telescoping structure of the slider 9 plus the slide rail 8 is not only very simple in structure, but also the slider 9 and the slide rail 8 will not collide during relative movement, with less noise. In addition, by disposing the lubricating structure on the telescoping structure of the slider 9 and the slide rail 8, the noise generated by the telescoping structure can be further reduced. Therefore, the overall silent effect is better.

[0031] At both ends of the slide rail 8, a first limiting step 10 for positioning the core-out position and a second limiting step 11 for positioning the core-in position are respectively provided. This setting can ensure the reliable switching of the refill 2 between the core-out position and the core-in position.

[0032] On the slide rail 8 and near the first limiting step 10, a first limiting depression 12 is further provided, and on the slide rail 8 and near the second limiting step 11, a second limiting depression 13 is further provided. This setting further ensures the reliable switching of the refill 2 between the core-out position and the core-in position.

[0033] It further includes a rotating member 14 that rotates synchronously with the control head 3. One end of the rotating member 14 is snap-connected to the control head 3, and the other end is provided with a trigger portion 6 extending into the oil storage tank 5. The slider 9 is arranged on the trigger portion 6. By connecting the control head 3 and the transmission member 4 through the rotating member 14, and the rotating member 14 is detachably connected to both the control head 3 and the transmission member 4, which is convenient for modular processing and installation.

[0034] On the outer side wall of the end of the rotating member 14 connected to the control head 3, a card slot 15 is formed. In the control head 3, a clamping block 16 is provided. The rotating member 14 is snap-connected to the control head 3 through the clamping block 16 and the card slot 15. This snap-fastening structure is simple and convenient for installation.

[0035] In the oil storage tank 5, a limiting post hole 17 into which the trigger portion 6 can be inserted is further provided. The slide rail 8 is formed on the top surface of the limiting post hole 17, and the slider 9 protrudes on the outer side wall of the trigger portion 6. This setting can not only use the limiting post hole 17 to position the trigger portion 6 to make the connection between the trigger portion 6 and the oil storage tank 5 more reliable, but also realize the structural reuse of the limiting post hole 17 and use its top surface to form the slide rail 8, thus making the overall structure simpler and more compact.

[0036] One side top surface of the limiting post hole 17 is higher than the other side top surface to form a first limiting step 10 for positioning the core-out position and a second limiting step 11 for positioning the core-in position at the junction of the two sides. The slide rail 8 is arranged on the lower side top surface of the limiting post hole 17, and the rotation angle of the tail end of the slide rail 8 relative to the head end is less than 360 degrees. This setting is easy to form the first limiting step 10 and the second limiting step 11, further simplifying the structure.

[0037] It further includes a connecting member 18. One end of the connecting member 18 is fixed inside the tail end of the pen barrel 1, and the other end is rotatably connected to the control head 3. In this embodiment, the connecting member 18 and the tail end of the pen barrel 1 are fixed together through a threaded connection structure. The rotational connection structure between the connecting member 18 and the control head 3 is formed by providing two circles of first annular protrusions 19 on the outer sidewall of the connecting member 18 and two circles of second annular protrusions 22 on the inner sidewall of the control head 3. After the second annular protrusion 22 of the control head 3 is snap-connected to the first annular protrusion 19 of the connecting member 18, the axial movement of the control head 3 on the connecting member 18 can be restricted, but the control head 3 can rotate circumferentially relative to the connecting member 18. This setting not only facilitates the connection of the pen barrel 1 and the control head 3 by using the connecting member 18, but also the connecting member 18 is hidden inside the pen barrel 1 and the control head 3, making the structure more concise.

[0038] The transmission member 4 extends into the connecting member 18, and an axial guiding structure is further provided between the transmission member 4 and the connecting member 18 for converting the helical movement between the transmission member 4 and the control head 3 into the axial movement between the transmission member 4 and the connecting member 18. This setting can ensure the reliable telescopic movement of the refill 2 in the axial direction.

[0039] The axial transmission structure includes a guiding block 20 provided on one of the connecting member 18 and the transmission member 4 and a guiding rail 21 provided on the other. In this embodiment, two guiding blocks 20 are provided and located on both sides of the outer sidewall of the transmission member 4, and two guiding rails 21 are provided and located on both sides of the inner sidewall of the connecting member 18. The positions of the two guiding blocks 20 and the two guiding rails 21 are correspondingly arranged. This axial guiding structure is simple and compact, and the guiding is reliable.

[0040] In this embodiment, the rotating member 14, the transmission member 4, and the connecting member 18 are all cylindrical. The triggering portion 6 is provided at the center of the rotating member 14 and is also cylindrical. The oil storage groove 5 is provided at the center of the transmission member 4 and is also set to be cylindrical and matching the triggering portion 6.

[0041] The installation steps of the writing tool with a rotating core-out in this embodiment are as follows:

[0042] (1) Align the card slot 15 of the rotating member 14 with the card block 16 of the control head 3, and assemble the rotating member 14 and the control head 3 into the component of process 1;

[0043] (2) After filling an appropriate amount of lubricating oil into the oil storage groove 5 of the transmission member 4, align the limit post hole 17 with the triggering portion 6 of the component of process 1 and install it to form the component of process 2;

[0044] (3) Align the guiding rail 21 of the connecting member 18 with the guiding block 20 of the transmission member 4, and press the connecting member 18 into the control head 3, and install the connecting member 18 into the component of process 2 to form the component of process 3;

[0045] (4) Insert the refill 2 and the elastic reset member 7 into the pen barrel 1 to form the component of process 4;

[0046] (5) Threadedly connect the connecting member 18 of the component of process 3 to the pen barrel 1 of the component of process 4 to complete the installation.

[0047] The working principle of the writing tool with a rotating core in this embodiment:

[0048] Rotate the control head 3, and the rotating member 14 rotates following the control head 3. At the same time, it drives the slider 9 on the trigger portion 6 to slide on the slide rail 8 of the transmission member 4. Since the slider 9 undergoes an axial displacement while rotating circumferentially relative to the slide rail 8, the transmission member 4 will, under the action of the axial guiding structure, convert the helical motion between the transmission member 4 and the control head 3 into the axial motion between the transmission member 4 and the connecting member 18. And the refill 2 abuts against the transmission member 4, so that the refill 2 can extend or retract from the pen barrel 1 following the axial movement of the transmission member 4. By changing the rotation direction of the control head 3, the refill 2 can be switched between the core-out position and the core-in position. When the refill 2 is in the core-out position, the slider 9 is limited in the first limiting recess 12 of the slide rail 8 and abuts against the first limiting step 10. When the refill 2 is in the core-in position, the slider 9 is limited in the second limiting recess 13 of the slide rail 8 and abuts against the second limiting step 11.

Claims

1. A writing tool with a rotating core, comprising a pen holder (1), a core (2) arranged in the pen holder (1), an elastic reset member (7) arranged on the core (2), and a control head (3) arranged at the rear end of the pen holder (1), characterized in that: The invention also comprises a transmission member (4) arranged between the pen core (2) and the control head (3); an oil storage tank (5) for storing lubricating oil is arranged inside the transmission member (4) at one end close to the control head (3); the control head (3) extends into the oil storage tank (5) and is connected to the transmission member (4); an end of the transmission member (4) away from the oil storage tank (5) abuts against the pen core (2); when the control head (3) rotates forward, the control head (3) drives the transmission member (4) to press downward so that the pen core (2) extends out; when the control head (3) rotates reversely, the transmission member (4) is lifted up under the action of the elastic reset member (7) so that the pen core (2) retracts.

2. A writing tool with a rotating core according to claim 1, characterized in that: The control head (3) is rotatably connected to the pen body (1); a spiral slide rail (8) is provided in the oil storage tank (5); a slider (9) is provided at the portion of the control head (3) extending into the oil storage tank (5); when the control head (3) is rotated in the forward direction, the slider (9) rises in a spiral relative to the slide rail (8); and when the control head (3) is rotated in the reverse direction, the slider (9) descends in a spiral relative to the slide rail (8).

3. A writing tool with a rotating core according to claim 2, characterized in that: Both ends of the slide rail (8) are respectively provided with a first limiting step (10) for locating the core-out position and a second limiting step (11) for locating the core-in position.

4. A writing tool with a rotating core according to claim 3, characterized in that: A first limiting recess (12) is also provided on the slide rail (8) near the first limiting step (10), and a second limiting recess (13) is also provided on the slide rail (8) near the second limiting step (11).

5. A writing tool with a rotating core according to claim 2, characterized in that: It also comprises a rotating member (14) which rotates synchronously with the control head (3); one end of the rotating member (14) is snap-connected to the control head (3); the other end is provided with a triggering portion (6) which extends into the oil storage tank (5); and the sliding block (9) is provided on the triggering portion (6).

6. A writing tool with a rotating core according to claim 5, characterized in that: A clamping groove (15) is provided on the outer side wall of one end of the rotating member (14) connected to the control head (3); a clamping block (16) is provided inside the control head (3); and the rotating member (14) is connected to the control head (3) by clamping through the clamping block (16) and the clamping groove (15).

7. A writing tool with a rotating core according to claim 5, characterized in that: The oil storage tank (5) is also provided with a limiting column hole (17) into which the trigger part (6) can be inserted, the slide rail (8) is formed on the top surface of the limiting column hole (17), and the slide block (9) is protruding on the outer side wall of the trigger part (6).

8. A writing tool with a rotating core according to claim 7, characterized in that: The top surface of one side of the limiting column hole (17) is higher than the top surface of the other side, so as to form a first limiting step (10) for locating the core-out position and a second limiting step (11) for locating the core-in position at the junction of the two sides, and the slide rail (8) is arranged on the top surface of the side where the limiting column hole (17) is lower.

9. A writing tool with a rotating core according to claim 2, characterized in that: It also comprises a connecting piece (18), one end of which is fixed in the rear end of the pen shaft (1), and the other end of which is rotatably connected in the control head (3).

10. A writing tool with a rotating core according to claim 9, characterized in that: The transmission member (4) extends into the connecting member (18), and an axial guide structure is provided between the transmission member (4) and the connecting member (18) for converting the spiral motion between the transmission member (4) and the control head (3) into the axial motion between the transmission member (4) and the connecting member (18).

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